Objective autorefraction in posterior chamber pseudophakia.
Automated refraction with the Canon RK-1 Autoref keratometer was evaluated in 110 eyes (110 patients) six to eight weeks after they had undergone extracapsular cataract extraction with posterior chamber intraocular lens implantation and achieved a best corrected visual acuity of at least 6/12. Autorefraction readings were obtained in 100 (91%) of these eyes. The agreement between autorefraction and clinical refraction data was 98% for spherical equivalence less than 0.51 dioptres (D), 95% for sphere power less than 0.51D, 94% for cylinder power less than 0.51D, and 85% for cylinder axis less than 11 degrees. Autorefraction can provide acceptably accurate postoperative refraction values in pseudophakic eyes.
Raj
P S
PS
Department of Ophthalmology, District General Hospital, Southport.
Akingbehin
T
T
Levy
A M
AM
D004864:Equipment and Supplies; D006801:Humans; D007910:Lenses, Intraocular; D008722:Methods; D011446:Prospective Studies; D012029:Refraction, Ocular